| Matthews | T. H. | Wallace Wood, Kojonup | TM1 and 43B, 11E | 1962 |
| Matthews | Thomas Philip | Doyles Well, Lawlers | M7T | 1926 |
| Matthews | W. | Woodlands, Sussex 493, Cowaramup | M9Z | 1962 |
| Matthews | W. F. | Mandalup, Mumballup | C7F and 57F, 14D | 1962 |
| Matthews | Wm. Jas. | Belmont Park Dairy, Belmont Park | WM0 | 1912 |
| Matthews | Wm. Thos. | Donnelly and Red Hill, Kunanalling | 1WM | 1912 |
| Matthews & Madews | - | Coohallon, Cunderdin | 2MM | 1912 |
| Mattingly | L. L. & S. J. | Avon Loc. 6088, Brookton | L5M and 17C, 107E | 1962 |
| Mattingly & Sons | H. & S. | Long-Pine, Brookton | 9HM and 21C, 119A | 1962 |
| Mattiske & Co. | R. R. | Yarrabin, Katanning | R7X and 116A, 22C | 1962 |
| Mattner | B. W. | Windy Gully, Bayswater | BM0 and 116A, 34B | 1962 |
| Mattner | Benj. W. | Dunedin, Bullsbrook | MX6 | 1924 |
| Mattner | I. H. | Pyrton Estate, Bassedean | MX6 and 35D, 32E | 1962 |
| Mattsson | E. B. (Mrs) | Doongan Station, Derby | BM6 and 22B, 45E | 1962 |
| Mattsson & Walden | - | Doongan, Derby | M5W and 2C, 119E | 1962 |
| Mauger | Chas. | Allendale, Balingup | M4R | 1912 |
| Mauger | Chas. | Allendale, Balingup | M4R | 1924 |
| Mauger | E. N. | Lot 404, Denmark | NN7 | 1962 |
| Mauger | J. C. | Nelson Loc. 109, Balingup | 6MV | 1962 |
| Maughan | A. (Mrs) | Allendale, Waroona | M5A and 12C, 31A | 1962 |
| Maughan | B. | Beaufront Stub, Harvey | XM6 | 1962 |
| Maughan | G. S. | Kirkhaugh, Nukarni | TM2 and 24D, 20E | 1962 |
| Maughan | J. S. & E. M. | Gilderdale, Nukarni | 4MN and 44B, 32E | 1962 |
| Maughan | John S. & George B. | Yilgarn 23, Walgoolan | 5YK | 1925 |
| Maughan | Thomas A., George S., James S. | Kirkhaugh, Nukarni | TM2 | 1927 |
| Maughan | W. | Ribbonwood, Udduc AA Lots 31 and 34, Frankland River | MW3 and 14C, 42A | 1962 |
| Maughan | W. D. & G. J. | Part of Lot 49, Waterloo | WM2 and 39C, 30A | 1962 |
| Maughan & Sons | - | Udac 56, Harvey | OQ0 and 112B, 6A | 1962 |
| Maughan (jnr) | T. (jnr) | Yolgerup, Kojonup | TM6 and 35D, 50E | 1962 |
| Maughau | T. | Jilbadji Loc. 16 Walgooolan | KQ4 | 1924 |
| Maund & Howard | - | Edjudina Station, Kalgoorie | A4B and 12C, 51F | 1962 |
| Maurice & Son | S. J. | Euragaby, Perenjori | SM4 and 12B, 108A | 1962 |
| Maver | J. | Glendivale, Northampton | 0JM and 34C, 3A | 1962 |
| Maver | Mary | Gropia, Northampton | XQ7 | 1924 |
| Mawby | John Hy. | Mawbyson Park (West Swan), Petermore Farm (Mawson) Rivercliffe (3rd Avenue, West Midland) | 2YE | 1924 |
| Mawson | A. O. | Brockodale, Napier, via Albany | WM9 | 1962 |
| Mawson | E | Brockodale, Albany | WM9 | 1924 |
| Mawson | Mrs. E. | Brockodale, Albany | WM9 | 1912 |
| Mawson | Rose | Primrose Valley, Ellen's Brook, Busselton | RM6 | 1927 |
| Maxfield | Thomas Edward | Yilgarn Loc. 181, North Walgoolan | EM3 | 1926 |
| Maxkenzie | A. E. | Ten Mile, Leederville | 8MZ | 1924 |
| Maxkenzie | P. C | Nirvana, Hine's Hill | P4M | 1924 |
| Maxton | W. C. M. & P. M. | Plant. Loc. 5656, 6175 Upper Kalgan, via Albany | 2MP and 26E, 12D | 1962 |
| Maxton & Sons | E. A. | Canberra and Sandtoft, Kalgan River, via Albany | VV1 and 46A, 25B | 1962 |
| Maxwell | C. J. | Loc. 1933-4, Karridale | CL6 and 18D, 6E | 1962 |
| Maxwell | J. jun | Block 55/99, Badjidup | 2LJ | 1924 |
| Maxwell | J., jun. | Block 55/99, Badjidup | 2LJ | 1912 |
| Maxwell | W. F. | 6258, 7814, Manjimup | MW5 and 32C, 28A | 1962 |
| May | A. J. | Hall's Creek Reserve, Hall's Creek | 7KY and 48B, 36E | 1962 |
| May | A. S. & A. A. R. | 2093, 2938, Margaret River | AM8 and 27B, 22E | 1962 |
